Jean pierre serve



(No Model.)

J. P. SERVE. APPARATUS POR PIGKLING TUBES.

110.440,511. Patented Nov.. 11, 1890.

lweior.

Whew@ me ams nuns qu., vnuvmmno.. mmm-Jaw. o. c. y

UNITED STATES JEAN PIERRE SERVE,

PATENT OFFICE..

OF GIVORS, FRANCE.

APPARATUS FOR PICKLING TUBES.

SPECIFICATION forming part of Letters Patent No. 440,511, dated November11, 18904.

Application iled August 7, 1889. Serial No. 320,043. (No model.)Patented in France February 15, 1889, No. 196,106, and in Italy J'nly l,1889,1To. 25,745,

To all whom t may concern:

Be it known that I, JEAN PIERRE SERVE, manufacturer, a citizen oftheRepublic of France, and a resident of Rue des Servettes, Givors,(Rhne), France, have invented certain new and useful Improvements inApparatus for Pickling Tubes, (for which I have obtained patents inFrance, No. 196,106, dated February l5, 1889, andin Italy, No. 25,745,dated July I, 1889), of which the following` is a specification. y

The improved apparatus for picklin g m etal tubes of any kind, whichforms the subject of this invention, is designed to enable therealization of certain important advantages, which I will statesummarily.

rlhe present invention is economical, because it permits the pickling tobe restricted to the interior of the tubes, while the means heretoforeemployed have necessitated the pickling of their exterior surface asWell as their interior surface and a corresponding expenditure of acid.Moreover, the said invention permits the preservation of the thin layerof metallic oxide which covers the exterior surface of the tubes, andwhich, under the special conditions in which it is generally produced,has the effect of insuring` to a remarkable extent the ulteriorpreservation of these tubes.

rlhe invention consists in the features of construction,the combinationor arrangement of parts, andthe principles of operation hereinafterdescribed and claimed, reference be ing made to the accompanyingdrawings, in which- Figure l is a longitudinal vertical sectional Viewof an appara-tus embodying my invention. Fig. 2 is a transversesectional view of a modified construction.

To perform the piekling operation I ar'- range at a sufficient depthbelow the surface of the ground or floor P P of the place where theoperation shall take place a trough A, lined with lead, as at e, Fig. l,and provided in proximity to its upper part with a cross-bar T, coveredwith a thick pad C, of india-rubber or other material suitable for thepurpose, as hereinafter set forth. The distance at which this cross-baris placed below the aforesaid floor must be adapted to the length of thetubes in o rder that their upper part shall be within reach of theworkman standing on the said floor.

Upon the above-mentioned pad of indiarubber or other material issupported one of the extremities of the tube, which has been carefullycut square in such a manner that the weight of the tube will be sufcientto make a tight jointbetween .its lower extremity and the said pad.

At. a suitable height above the tube D is arranged a second trough A',similar to the first and having a series of cocks R R or india-rubberpipes provided with clamps or the like corresponding to the series oftubes placed vertically or otherwise below them. In case the tubes areinclined the aforesaid pad must be arranged at such an inclination thata tight joint will invariably be formed. Under these conditions it iseasy to completely fill the tubes with acidulated Water and then allowthem to remain in this state for the time deemed sufficient for thepickling. lVhen this operation has been terminated, it is suflicient toslightly displace or incline the tubes in order to allow the liquidwhich they contain to run out directly into the lower trough. The tubesare then transported to the desired spot to be Washed, dried, andfinally subjected to the polishing operation. In this manner the acidliquid contained in the upper trough A will gradually descend into thelower trough A, whence it is subsequently raised again into the upperreservoir through the medium of pumps or any other device suitable forthis purpose.

In the modification, Fig. 2, I employ two lower troughs A, lined withlead, as at a, and connected by a tube B for keeping the level of theacidulated water in the two tanks at the same height. A single uppertrough A with cocks R at opposite sides, is employed, and each lowertrough A contains a cross-bar V'I and an india-rubber pad C, asexplained with reference to Fig. l. The arrangement in Fig. 2 isdesirable in that it permits a greater number of tubes to be pickled atthe same time.

What I claim isl. A tube-pickling apparatus consisting of a trough forreceiving the acid from the tubes,

IOO

an elevated yielding and impermeable pad for supporting and making atight joint with the lower extremities of the tubes being pickled, andmeans for introducing the acid into the tubes, substantially asdescribed.

2. A tube-pickling apparatus consisting of a trough for receiving theacid from the tubes,

a lower trough for receiving the acid from the tubes, a pad ofindia-rubber, or other yielding or impermeable material for making andsupporting a tight joint with the lower extremities of the tubes to bepickled, and an upper trough having pipes-or cocks for introducing theacid into the tubes, substantially as described.

In testimony whereof l have hereunto signed my name in the presence oftwo subscribing witnesses.

JEAN PIERRE SERVE. Witnesses:

GEORGES FREYDIER DUBREUL, XAVIER JANIcoT.

